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2026-08-06docs: spi: add documentation for userspace device instantiationVishwaroop A
Document the new_device and delete_device sysfs attributes on SPI controllers: - Documentation/spi/instantiating-devices.rst: describes when and why this interface is needed, accepted parameters, usage examples, and limitations. - Documentation/ABI/testing/sysfs-class-spi-master: formal ABI entry for both attributes. Signed-off-by: Vishwaroop A <va@nvidia.com> Link: https://patch.msgid.link/20260803104614.2548375-3-va@nvidia.com Signed-off-by: Mark Brown <broonie@kernel.org>